1 # Copyright (C) 2015 The Android Open Source Project 2 # 3 # Licensed under the Apache License, Version 2.0 (the "License"); 4 # you may not use this file except in compliance with the License. 5 # You may obtain a copy of the License at 6 # 7 # http://www.apache.org/licenses/LICENSE-2.0 8 # 9 # Unless required by applicable law or agreed to in writing, software 10 # distributed under the License is distributed on an "AS IS" BASIS, 11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 # See the License for the specific language governing permissions and 13 # limitations under the License. 14 15 .class public LEquivalent; 16 17 .super Ljava/lang/Object; 18 19 .method public static method([I)V 20 .registers 3 21 const/4 v0, 0 22 if-eq p0, v0, :first_if 23 move-object v0, p0 24 :first_if 25 if-eqz v0, :second_if 26 # Having this move-object used to confuse the type propagation 27 # phase of the optimizing compiler: the phase propagates types 28 # based on uses, but a move-object disappears after SSA, leaving 29 # the compiler with a reference equivalent that has no use. So 30 # we would consider the phi equivalent reference of v0, as dead, 31 # even though it is the one that has the correct type. 32 move-object v1, v0 33 :second_if 34 return-void 35 .end method 36
